Lasting-machine.



No. 893,331. PATENTBD JULY 14, 1908.

1 S. W. LADD.

L'AS'I'ING MACHINE.-

APPLIUATION FILED AER. 13. 1901.

2 SHEETS-SHEET 1.

@MA/ V N 8 3 31. PATENTED JULY 14 1908. SWLADD LASTING MACHINE.

APPLICATION FILED APE. 1a. '1901. 2 sHEBTFSfiEET 2.

gripper operating mechanism and a very comprised in mtel SHERMAN W. LADD. OI" BEVERLY,

MASSACl-I c COMPANY, or PATEP SON NEW Jlili I NITED SHOE MACHINERY A CORPORATION E OF NEW JERS Y LASTING-MACHINE.

N 0. 893,331. Specification of Letters Patent.

Application filed April 13,1901. Serial No. 55,728.

Patented July 14, 1908.

, SHERMAN W. Lam), a asting machine of the type shown in of overly, county of Essex, and Common- United States Letters Patent 584,744, and Wealth of Massachusetts, rave invented cerreference may be had to that patent for a tam Improvements in Lasting-Machines, of full understanding of the portions of the ich are notdescrlbed in connectlon with this present invention.

Of the drawings Figure 1 of the machine. Fig. 2 1s. a

' parts comprised in which the following, read in connection with the accompanying drawings is a specifica-. tion.

This invention relates to lasting machines and particularly to novel olperating mechanmachine wh perspective this invenis a side elevation ism having provision for ac justment to vary tion. Fig. 3 1s a section on line 3 of Fig. 2. the action of the machine uponthe work. F igs. 4 and are side elevations showing he invention is shown as applied to the etails connected with Fi 2.

invention relates, the grip is first made to -seize the e ge of the u per and then move yieldingly up aw and strain the upper over the last. To this end the gripperscarry a ball 4 (shown in dotted lines, Fig. l) socketed for movement uni important feature of the inventlon consists in the combination with actuating mechanism that includes a yielding element and means for initially adjusting said mechanism to etermine the tension of said element, of hat can be readily operated for changing the tension whereby the strain effected by the mechanism is modified. the illustrated example in which the lastin machine grippers are connected with mechanism for up ifting them, there is a spring the operating mechanism and provlslon is made for initially the spring to for ers mechanism frame to the lever y a orce applied to its Such force is applied to the cam (not shown) on the ma To that end said cam is cam groove into aid rear end. lever 2 from a chine shaft D. provided with a means which can set by the operator as the work for changing the tension of the updraw spring according to the re( nents of a particular portion of the shoe being operated upon. To his I movement once in each' directi 1' single revolution of the cam.

"1e bar 10 has screw threaded engagement with spindle 12. 11 said spindleis a sliding collar 14 having pivotal connection with the rear end of lever 2 and normal] resting on the top of bar 10. S indle 12 has screw threaded engagementwit 1 nut 16 and supports a loosely slidin collar 18. Between said nut 16 and co lar 18'is a spiral spring 20 normally under tension. Interposed'bet-ween the collar 18 V convenient reach of the operator for: shifting the wedge.

directly to change'the'tension of the spring, and t ere is provision for locking the we ge in'its adjusted positions rod 24 eby dur ng repeated 0 ese and other including certaln combinations'of parts an details of explained i t an upward n connection with p the of the machineand will y pointed out in the claims.

11 operating the machine to which this cal tilting movement of I awedge-slide 22 connected with which is a crates as a connecting medium, transmitting plane face of the slide and the spring 20 is unmovement of bar 10 to the lever 2, and re-i der its normal tension to which it was iniversely tilting lever 2 for uplifting the griptially adjusted by the adjusting nut 16. It persto pull the upper until the tensional will thus be seen that the machine is not only strain of the leather, developed by the uprovided with the nut 16 for initially adjustlifting grippers, exceeds the normal tension ing the tension of the spring through which of spring 12. After this takes place, spring the grippers are actuated, but that by the 12, contracting, acts as a yieldmgconnectpresent improvement means is also provided, ing medium, transmitting movement and under the control of the workman and capaforce to the lever 2, so as to impart a yielding ble of being put into and out of operation at uality to the further uplifting movement any time, for increasing the tension of the of the grippers. spring so that the grippers may be actuated In the operation of the machine it has been with a greater force than that rovided for found desirable to change the tension of by their initial adjustment. T 1e wedge by 5 spring 20 abruptly in order to get a stronger which this adjustment is preferably eii'ected g0 or less yielding pull on the upper, or vice maintains the adjustment of the spring durversa, and the purpose of this invention is to ing repeated 0 erations of the machine or rovide for this change being made without until the wedge is again shifted. The impeding the operation of the machine. shoulders 24 serve to retain the wedge se- 20 The last, having the upper, its lining, etc., I curely in its operative )osition until it is 85 suitably applied thereon, with the inner-sole positively released by the workman, after on the bottom of said last, is held by the which the spring automatically returns the workman bottom upwardly against the rest wedge to its ino erative position in the rear 29 in positionfor the grippers to come forof the rollers, said rollers then resting on the ward and grip the e lge of the u per. A sinplane portion of the slide at the foot of the 90 gle pair of'grippers is employe which operwedge. ates on a section of the upper at each com- Having thus described my invention, what plete'operation of the machine. The shoeis' I claim is: moved by the workman step by step and -1. A machine for working an upper over a 30 turned for bringing all parts of the upper, at last, comprising grippers for grip .ing the up- 95 different times, to the action of the grippers. lie grippers er, actuating mechanism for t If, durmg the lasting process, the workman, including a y elding element, means for miholdmg the shoe ant observing the work,

tially adjusting the actuating mechanism to sees that a variation in the grippers u lifting pull is desirable, he seizes the hand e 28 determine the tension of said yielding element, and independent means under control 190 and by it moves the slide 22 into position, .of the workman for directly changing the relatively to the spindle 12, so as to contract tension of said yieldingl element to modify orexpand spring 20 as required for giving t the pulling tension of e grippers. the pull desired. This obviously is accom- 2. A machine for working an upper over a T v 40 plished by the workman at will and without last, comprising gri pers for gripping the updiscontinuing or in any way impeding the maer, mechanism inc uding a spring for actuchines continuous o eration. ating the grippers, means for initially adjust- T he movement 0 the wedge toward and ing the spring to determine its tension, and from its operative position is made easier by independent means under the control of the reason ofthe collar 18 being provided with operator for directly adjusting the spring to 1, anti-friction rollers 23 arranged to bear on modify its tension and thereby determine the the inclined face of the wedge, as shown. force with which the grippers -are operate The wedge is slotted to embrace and be throughout the movement imparted to them guided in its movements by the stem 12 of" by said actuating mechanism. 50 the bar 10, as shown in Figs, 2 and 3. The 3'. A machine for working an upper over a wedge is provided at its upper end with last comprising grippers for gripping the upshoulders 24 which stand in front of the per, yielding actuating mechanism for causrollers 23 when the wedge is in its operative ing the grippers to pull the upper with yield- 1:- position for increasing the tension of the ing tension, means for initiallfy adjusting said '55 spring 20. These shoulders serve as retainactuating mechanism to determine the 12 ing means to hold the wedge in operative poamount of said yielding tension, and iridesition. Torelease the wedge it is only necespendent means under control of the worksaw that it be pushed back by the workman man to change said mechanism at any time, far enough to put the retaining shoulders 24 thereby modifying the pulling tension of the 60 "under or back of the rollers 23, after which grippers durin the running of the machine, the spring 20, acting on the inclined face of said machine aving provision for securingthe wedge, automatically forces it backsaid last-mentioned means in adjusted posi- I wardly, or to the right in 'Fig. 5, until it tion. I

reaches its inoperative position, shown in 4. A machine for working an upper over 5v Figs. 1 and-fl, where the rollers rest on the a last comprising a lever, a grippers .mech- 13 through said spring for .causingsai'd grip-- pers to pullthe upper, and means arranged to have engagement with said spring connec- .tion and extending to thegrippers end of side of its pivot pers to pull said' lever, and adapted ing the running of-the pers mechanism to pull wedge shapeddevice for changlng the tenl a last comprising grippers said lever for changing the tension of said spring.

5. A machine for working an upper over a lastcomprising a pivoted lever, a .grippers mechanism applied to the lever on one 1 point, a spring connection arranged to have engagement with said lever on the other side of its pivotal point, an actuating mechanism operating through said spring connection for causingthe gripthe upper, and a deviceinterposed between the actuating mechanism and for movement durmachine, :to change the tension ofsaid spring connection. 6. Amachine for working an upper over last comprising a pivoted lever, agrippers mechanism a plied to the lever on one side of its pivotal point, a yielding mechanism arranged to operate on the lever on the op.- posite side of its pivotal point, mechanism arranged to actuate the lever through said yielding mechanism for causing. the grip the upper, and a sion of said yieldingv mechanism, said device having an extension to be operated from the grippers end of said lever. 7. A machine for workin an upper over or gripping the upper, a cam having a constant throw, mechanism between the. cam and grippers for imparting to the latter by the former a pulling movement, said mechanism including a yielding medium, which is normally funder tension, for giving a .yieldingquality to the pulling strain of the'grlppers,

means for. initially adjusting said yielding medium and other means under control of the workman for changing the tension of said medium at will, thereby changing the amount of the pulling tenslon of the grippers. I

8. n a machine for working an upper over a last, a lever, a grippers mechanism connected to the lever at one side of its fulcrum, a spring connection applied to the otherside (if its fulcrum, an

lever-at the operating mechanism acting through said sprin connection for movingthe lever, and an a justing device underthe control-of the workman and located between the said s ring connection and the lever for varying t e tension of the sprin connection. .9. A machine for wor ing' an upper over a last, comprising a lever, a grippers mechanism connected to the lever at one side of its crum, a spring connection applied to the a last, comprising thesprmg, said over a last, a lever,-a grip an adjusting device under the control of the workman .for varying-the tension of the spring, said .machine having 'rovision for said. evice 1n adautomatically securing justed position.

.sprlngconnection for moving the lever, and

1 0. In a machine for working an upper over alast, a lever, a grippers mechanism connected to the lever at one side of 1ts fulcrum, a sprmg, an operating mechanismactmg through said spring at the other side of the fulcrum of the lever for moving the lever .in. the direction to uplift the grippers mechane ism, and an adjusting device movable at the will of the workman toward and from operative position foigincreasing the tension of the spring.

v 11. A machine f or'workin'g an upper over an operating mechanism acting through said spring at the other side of the fulcrum of the will of the workman toward and from operative position for increasing the tension of machine having provision for retaining the adjusting device in operative position and for automatically movmg said device 1nto inoperative position when it is re eased.

1 2. a In a machine for working an upper over a last, a lever, a grippers mechanism supportelement ever, an acting through said ed by one end of the lever, a yielding applied to the other end of the operating mechanism a lever, a grippers mech anism connectedtothe lever at one side of it's fulcrum, a sprmg,

the lever .for movin the lever, and an adjusting device mova'b e at yielding element for movingth'e lever, and a wedge arranged to be interposed between said yielding element and the ever at the will of the workman for increasing the tension of the spring, whereby the grippers mechanism will be actuated with greater force in pulling the upper.

13. In a machine for working an upper wedge 1n itsoperative osition.

14. In a-machine or working an upper over a last, a pivoted'lever, a grip ers mechanism having connection with sald lever, op-' erating mechanism for'said leveradapted to one direction, a yielding. element in said 0 crating niechanism'wherebfy to move t e grippers mechanism yieldingly in the opposite direction, means for initially adjust ng ers mechanlsm one end of the ever, a yielding move the grippers mechanism positively in under the desired the tension of said yielding element, and a last, comprising grippers for gripping the other means under the control of the workupper, mechanlsln including a spring for acman for varying the tension oi said element.

tuating the grippers to pull the upper up 15. A machine for Working an upper over Wardly, a screw for initia ly setting the tena last, comprising g-ri pers for gripping the sion of the spring, anda wedge for adjusting upper, mechanism inc udin a spring for acthe spring to vary at the will of the operator tuating the grippers to pul the upper upwardly, means for determining the initial tension of the spring, and other .manually controlled means for adjusting the spring to vary its tension, said latter means being constructed and arranged to maintain the spring tension during repeated operations of the machine.

16. A machine for Working an upper over the force with which the grippers will pull the upper. i Signed by me at Boston,

day of April 1901.

SHERMAN W. LA'DD.

Mass, this 12th Witnesses I NELSON W. How/nu), EDWARD H. PA'[J\EK. 

